One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,8)(5,6)(9,13)(10,15)(11,16)(12,14)(17,18,22,27)(19,24,30,23)(20,25,31,29)(21,28,32,26)(33,34,40,42)(35,36,37,38)(39,47,48,41)(43,46,45,44)(2,6)(3,9)(8,14)(10,11)(17,19,22,30)(18,23,27,24)(20,28,31,26)(21,29,32,25)(33,35)(34,36)(37,40)(38,42)(39,43)(41,44)(45,48)(46,47)(17,19,22,30)(18,23,27,24)(20,28,31,26)(21,29,32,25)(33,36,40,38)(34,35,42,37)(39,44,48,46)(41,43,47,45)(1,2)(3,7)(4,8)(5,6)(9,13)(10,15)(11,16)(12,14)(17,19)(18,24)(20,28)(21,29)(22,30)(23,27)(25,32)(26,31)(33,37,40,35)(34,36,42,38)(39,45,48,43)(41,44,47,46)(1,3,5,9)(2,7,6,13)(4,11,12,10)(8,16,14,15)(17,20)(18,25)(19,28)(21,23)(22,31)(24,32)(26,30)(27,29)(33,38,40,36)(34,35,42,37)(39,44,48,46)(41,45,47,43)(1,4,5,12)(2,8,6,14)(3,10,9,11)(7,15,13,16)(17,21,22,32)(18,26,27,28)(19,29,30,25)(20,24,31,23)(33,39)(34,41)(35,43)(36,44)(37,45)(38,46)(40,48)(42,47)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.